The Midwife Mumma Valve Set Pack

Description

Your breast pump valves and backflow protector membranes are crafted from flexible silicone. This material stretches and releases with each suction cycle of your breast pump, creating the suction that draws out breastmilk. Over time, with regular use, the elasticity of these parts diminishes. These are best to be replaced every 8-12 weeks, depending on your total use.